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Finding the Fourth Proportional to 424,715.86, 636,629.55 and 158,360.50

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Solution

The fourth proportional to 424,715.86, 636,629.55 and 158,360.50 is: 237,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,715.86 : 636,629.55 = 158,360.50 : x
  2. Step 2: Convert to fraction form
    424,715.86/636,629.55 = 158,360.50/x
  3. Step 3: Cross multiply
    424,715.86x = 636,629.55 × 158,360.50
  4. Step 4: Simplify right side
    424,715.86x = 100,816,973,852.78
  5. Step 5: Solve for x
    x = 100,816,973,852.78/424,715.86
  6. Step 6: Final answer
    x = 237,375.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.